How do we skip a question within a repeat group?

You could do it as outlined in the image shared below:

In the survey tab of your xlsform:

Image 1

In the choices tab of your xlsform:

Image 2

Data entry screen as seen in Enketo (when a condition is not met):

Data entry screen as seen in Enketo (when a condition is met):

Reference xlsform:

Household Repeat (Skips).xlsx (28.2 KB)